advice for cooking marry me chicken

some recipes call for cooking the chicken 5 to 6 hours on low and then the other recipes call for 2 – 3 hours on low. I'm confused why the massive difference

I did see on one recipe where it said chicken thighs for 6 hours

but most of them called for chicken breasts for 6 hours.

The thing is chicken gets really rubbery if it is overcooked and I can't remember the last time I slow cook chicken. I think I always overcook it, but I'm scared of under cooking it!

I'm confused, please advise.

I think the recipe I'm going to go with is

1 teaspoon salt

½ teaspoon black pepper

1 teaspoon garlic powder

1 teaspoon onion powder

1 tsp smoked Paprika

1 tablespoon olive oil

1 cup chicken stock

1 (8 oz) jar sun-dried tomatoes (drained)

1 cup heavy cream

1 cup Parmesan cheese

1 teaspoon Italian seasoning

1 teaspoon dried basil

4 cloves garlic, minced

Fresh parsley, chopped (for garnish)

1. Pat the chicken dry and season both sides with salt, pepper, garlic powder, and onion powder.

2. Heat olive oil in a skillet over medium heat. Sear the chicken for 2–3 minutes per side until lightly golden.

3. In a small mixing bowl, whisk together the wine, the minced garlic, salt, ground black pepper, Italian seasoning, and paprika to the crock pot, then stir gently to combine all the ingredients into a flavorful base

4. combine all ingredients in slow cooker

cook on low but for how long?

an hour before it's done cooking, at the heavy cream.

Or is there another way you like this?